1. Tardigrade
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  4. The readings shown in two spring balances S1 and S2 are 90 kg and 30 kg, respectively, and the lift is accelerating upwards with an acceleration of 10 m / s 2. If the mass is stationary with respect to the lift, then the mass (in kg ) of -the block will be

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Q. The readings shown in two spring balances $S_{1}$ and $S_{2}$ are $90 \,kg$ and $30 \,kg$, respectively, and the lift is accelerating upwards with an acceleration of $10 \,m / s ^{2}$. If the mass is stationary with respect to the lift, then the mass (in $kg$ ) of -the block will bePhysics Question Image

Laws of Motion

Solution:

$T_{1}-T_{2}-m g-m a=0$
$T_{1}-T_{2}=m(g+a)$
$600=m(10+10)$
$\Rightarrow m=30 \,kg$

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